Hi, dear friends,

want to hear your opinion .... experience ... suggestion ....

Last year we made general overhaul on SAB 128 rotatune (high stage chiller) now after 5000 working hours client asked for service, because the shaft seal was leaking too much... no smell of ammonia only oil is coming out...

We opened it and checked, but find no sign of wear or damage, all was clean and nice.

What to do? ... Check and clean all parts and install again the old carbon part on shaft, but with new steel part inside of cover. After a few days oil leaking was bigger then reduced and now again start at the rate of 0,080-0,090 l/day what is about 0,5-0,6 l/week or about 2-2,5 l/month.

What to do? Please, do not tell me to install a bigger plastic bottle for leaking oil ... instead of this one

Seems it is a big amount of leaking oil, but we do not have a good explanation why and what is the best to do ... We are in doubt ... we installed a complete new shaft seal during general overhaul... to install again a new shaft seal is not cheap, but the worst will be if we have a leaking again after 4000-5000 hours like now

Thanks for your input...

Best regards, Josip